In order to adapt to the natural environment and make rational use of natural resources, human beings must master the laws of natural change. However, the motion description of these problems needs to be completed using a mathematical model. Using modeling methods, using the data obtained from equation calculation, selecting appropriate algorithms to establish mathematical models, and analyzing practical problems with the help of mathematical models, the accuracy of problem analysis can be improved to a certain extent. After establishing the mathematical model, in the process of analyzing the problem, it is found that the mathematical model does not fully reflect the real case, 

      but its error is within a reasonable range, and the results of the mathematical model do not affect people's analysis. Now it is an information society, and the data obtained by using computer detection technology is more accurate and reliable. It can automatically complete the monitoring and analysis of data according to pre-set procedures. In the detection process, closed-loop detection and open-loop detection can be used. If computer detection and control technology is adopted, various parameter data required for detection can be set, the production status can be analyzed, the production situation can be fully understood, and the necessary control measures can be taken. 

      In control work, data is the foundation, and the role of detection is to effectively control automobile production. When the automobile electronic control system is running, in order to improve the detection performance and give full play to the function of the control system, it must give full play to the role of computer technology. In the process of analyzing data, it is necessary to improve the accuracy of data detection, reduce the detection cost as much as possible, and complete the data monitoring and analysis through the computer to analyze and judge the control program. The power system is one of the most important subsystems in automotive system design. Total power consumption, battery reverse protection, vehicle jump start, vehicle noise and vehicle hibernation power are all factors that must be considered. If the power supply is not well designed, no good system can work normally. The intelligent power semiconductor products provided by Motorola can manage all aspects of the power subsystem well. The input power comes directly from the vehicle battery, and the purpose of battery polarity protection can be achieved by adding external diodes. SBC can complete the protection action under all overpressure conditions. Using power MOSFET technology, the device can work normally when the battery voltage is as low as 4.5V; when the temperature reaches 160℃, the internal thermal shutdown is carried out. The transceiver has the function of master state timeout detection, internal thermal protection function and can+ and can input short circuit protection function. In the transceiver, the can+ and can input terminals protect the power supply or ground short circuit through the start-over, the battery is reversed. After the power system and input adjustment are determined, the output system must be considered. Many car loads cannot be driven directly by MCU or low-current interface devices, including motors and lights. Relays or mechanical switches are the main high-current switching devices in the body control structure. Because the electromagnetic system does not require a lot of investment, and the design technology is mature, many system builders are still willing to choose. However, there will be some problems. For example, the limited life of mechanical contacts limits the switching frequency of the relay. Because the contact will produce inertia when opening or closing the tension, it will jump when it stabilizes to the next state. 

      This beat limits the maximum working frequency. If it exceeds this frequency, the service life of the relay will be shortened. Mc33887 motor driver is a complete H-bridge driver with a continuous current driving capacity of more than 5A. Therefore, it is very suitable for locking motors, antenna motors or wiper pumps. Mc33887 also has a high-end current induction feedback function. The high-end current induction feedback function corrects the driving frequency and load cycle of the motor according to the real-time feedback of the motor current. 

    Like the lamp driver, PWM can be automatically output when overcurrent is detected.